This ledger covers the period July 1907-February 1908. As the account book of final entry, it summarizes transactions pertaining to the experiments performed at the laboratory. There are also accounts relating to Edison's royalties, his companies and business operations, laboratory suppliers, the Fort Myers laboratory, and Glenmont. Entries for experimental expense accounts include the project numbers in laboratory record books N-01-03-15 and N-10-07-26. The spine is stamped "Ledger" and is labeled "General Ledger  T.A.E. Personal  July 1, 1907 To Febry 28, 1908." The front cover is labeled "Ledger No 8  Personal General Ledger  July 1st 1907-Feby 28th 1908." The book contains 545 numbered pages and an index; many pages are blank.